Abstract A fairly well-preserved specimen of a new primitive mammal,
_Repenomamus robustus_ gen. et sp. nov., has been described from the Yixian
Formation (Lower Cretaceous), western Liaoning, China. This animal has
several derived characteristics, such as well-developed dentary/squamosal
articulation, reduced number of tooth, differentiation of premolars and
molars in postcanine teeth, presence of a dorsal process of the premaxilla
that is not in contact with the nasal, closed medial wall of the orbit, and
presence of fingerlike promontorium on the petrosal. It also retains some
primitive reptile-like features. It is the most primitive taxon among the
three mammals known from the Jehol Biota, and also represents the largest
mammal of Mesozoic age over the world.

As with the last one, the PDF link doesn't seem to work. I have also
been unable to fully view the PDF of the _Longipteryx_ paper in Chinese --
Acrobat reports a CMap error (corrupt or missing font file), and the first
page doesn't come up at all. Anyone have a clue about this one? I've
installed Adobe's Chinese fonts...